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The Netbeans Java debugger is in general pretty slow and this get magnified when there is any kind of IO operation involved. If you step over a line that is involved in an IO operation (like a network or database call), you will notice the debugger takes a long time to return though it does eventually return. Please let me know if I can provide some kind of snap shot that would help you guys to look into this.
Yes, please, take some profiler snapshots during the stepping (it's an icon next to the memory meter). Are you sure that the IO operations are slower under the debugger then when executed normally? Can you provide some sample project or at least more concrete steps what your program does? Thanks.
closing incomplete issues